| Автор | Tóth, Gábor |
| Автор | Szöllősy, Áron |
| Автор | Hermecz, István |
| Автор | Horváth, Ágnes |
| Автор | Mészáros, Zoltán |
| Дата выпуска | 1985 |
| dc.description | By <sup>1</sup>H, <sup>13</sup>C and <sup>15</sup>N n.m.r. studies we have established that tautomeric equilibria of 9-formyl-tetrahydro-4H-pyrido[1,2-a]pyrimidines and their homologues are controlled mainly by the size of the ring containing a single nitrogen atom. Thus in the pyrrolo analogues the enol imine form is predominant, with the azepino homologues the enamine, and with the azocino analogues the imine. The enol imineâ enamine interconversion is relatively fast, whereas the imineâ enamine interconversion is slow on the n.m.r. time-scale. The relative stabilities of the individual tautomers are explained by stereo-chemical factors and hydrogen bonding. |
| Формат | application.pdf |
| Издатель | Royal Society of Chemistry |
| Название | Tautomerism of 9-formyltetrahydro-4H-pyrido[1,2-a]pyrimidin-4-ones and their ring homologues: a1H,13C, and15N nuclear magnetic resonance study |
| Тип | research-article |
| DOI | 10.1039/P29850001881 |
| Electronic ISSN | 1364-5471 |
| Print ISSN | 0300-9580 |
| Журнал | Journal of the Chemical Society, Perkin Transactions 2 |
| Первая страница | 1881 |
| Последняя страница | 1885 |
| Выпуск | 12 |
